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Total power constraint equality in integer bit loading algorithms for multicarrier systems

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2 Author(s)
S. Panigrahi ; Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, Que., Canada ; Tho Le-Ngoc

Bit-rounding algorithms are practically attractive because they are relatively computationally efficient and implementationally realizable because they ensure integer-bit distribution. However, due to the concave nature of the rate-energy relationship these algorithms often tend to load bits aggressively, which leads to the system BER constraint violation. To counter this violation we propose an efficient moderate algorithm based on biased bit round-off, which ensures BER fidelity and total power constraint equality, essential for rate optimality

Published in:

Canadian Conference on Electrical and Computer Engineering, 2005.

Date of Conference:

1-4 May 2005